In this work the analysis of noise especially the transition jitter noise is used to evaluate the areal density which are consider as one of the most important characteristics in magnetic recording systems. This is possible through the analytical evaluation of the signal noise ratio (SNR) using kink soliton as domain wall profile and assuming that, the transition noise are the dominant noise in recording media. The intrinsic parameters and experimental values for magnetic recording media especially the domain wall width are chosen to emphasize the impact of noise in a certain simple materials and compounds materials used to manufacture recording media. The comparative study on evolution of areal density is done to reinforce the fact that noise can governed the magnetic density, where the values of 180 Gb/inch 2 is attaint for kink soliton profile here compare to 100 Gb/inch 2 obtain in 2008. The study is complete with numerical investigation of areal density where the value about 1.8 × 10 11 bits/inch 2 can be attaint when SNR is about 4300 dB, this results are obtain with a basic compound CoF 2 having a domain wall width of 95.992 nm just to strengthen the work.